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Mk1 F4R/172'd Track Car Project [Year 3 - Engine and Chassis Rebuild]
TVR Cerbera
Re: Mk1 172 Hybrid Track Car Project
Not got water down the spark plug holes have you?
Not got water down the spark plug holes have you?
F4R'd ITB'd '92 cup racer
Re: Mk1 172 Hybrid Track Car Project
sounds like mine lol
wouldnt run before fcs, then got it running on monday, sparky was round last night so tried to get it to cut out again so he could trace the fault
started every time!
sounds like mine lol
wouldnt run before fcs, then got it running on monday, sparky was round last night so tried to get it to cut out again so he could trace the fault
started every time!
Re: Mk1 172 Hybrid Track Car Project
i think my ECU connector got wet...
I relocated my ECU to the scuttle the other day, ran fine etc, then had a LOT of rain yesterday, and it didnt want to start...
Towed it home, left the ECU off, not rained all night and this morning, plugged it in and started first time....so im guessing its dried out...
Ive checked all the wires for broken joints, RSTuner shows no errors, so it must be ok lol
i think my ECU connector got wet...
I relocated my ECU to the scuttle the other day, ran fine etc, then had a LOT of rain yesterday, and it didnt want to start...
Towed it home, left the ECU off, not rained all night and this morning, plugged it in and started first time....so im guessing its dried out...
Ive checked all the wires for broken joints, RSTuner shows no errors, so it must be ok lol
Christopher
ClioSport Club Member
Z4M
Re: Mk1 172 Hybrid Track Car Project
Aye, he went to Le Mans... lucky git.
Coming to the KK meeting atthe end of the month, Jord?
Aye, he went to Le Mans... lucky git.
Coming to the KK meeting atthe end of the month, Jord?
Re: Mk1 172 Hybrid Track Car Project
Got someone bringing me a spare TDC/CPS sensor to try shortly and hopefully that will sort it....If not im going to have to check all the wiring....
Last port of call is dishing out another 50 odd quid to renault for a brand new sensor...
If the car decides to work, im going to go and do a few vids later, finally got my recording box working for the bullet camera again because of my sheer boredom today lol
Got someone bringing me a spare TDC/CPS sensor to try shortly and hopefully that will sort it....If not im going to have to check all the wiring....
Last port of call is dishing out another 50 odd quid to renault for a brand new sensor...
If the car decides to work, im going to go and do a few vids later, finally got my recording box working for the bullet camera again because of my sheer boredom today lol
TVR Cerbera
Re: Mk1 172 Hybrid Track Car Project
you're gonna be so bored when it's working right!
you're gonna be so bored when it's working right!
TVR Cerbera
Re: Mk1 172 Hybrid Track Car Project
should be, won't know till aug time
should be, won't know till aug time
F4R'd ITB'd '92 cup racer
Re: Mk1 172 Hybrid Track Car Project
almost
drove it back to my house last night and driven it to work this morning, hasn't blown up/caught fire just yet
this is EXACTLY what mine was doing (and it might still come back!) 12v to coil and pump on ignition (priming) but then nothing when cranking
i got mine to run by pulling the fuel pump relay out a bit so you can get a bit of wire onto the prongs. then whilst cranking connect the constant live prong to the output prong. once it's running remove the bit of wire and push the relay fully in
worked for me, gotta be worth a try
does that mean yours is almost done geesus
almost
drove it back to my house last night and driven it to work this morning, hasn't blown up/caught fire just yet
this is EXACTLY what mine was doing (and it might still come back!) 12v to coil and pump on ignition (priming) but then nothing when cranking
i got mine to run by pulling the fuel pump relay out a bit so you can get a bit of wire onto the prongs. then whilst cranking connect the constant live prong to the output prong. once it's running remove the bit of wire and push the relay fully in
worked for me, gotta be worth a try
Re: Mk1 172 Hybrid Track Car Project
But dont know what the cause was?!
Another thing I noticed with it^
I can tell when its going to work... because if i keep trying it primes as you said on ignition without fail, but wont give fuel on cranking... although, I can tell when its going to start as the pump will prime twice in a row, with a split second inbetween, then I know if i turn the key itl fire up, which it does....
But every time after that itl just prime once and still start etc....until it all happens all over again....dont know if your's did that?
But dont know what the cause was?!
Another thing I noticed with it^
I can tell when its going to work... because if i keep trying it primes as you said on ignition without fail, but wont give fuel on cranking... although, I can tell when its going to start as the pump will prime twice in a row, with a split second inbetween, then I know if i turn the key itl fire up, which it does....
But every time after that itl just prime once and still start etc....until it all happens all over again....dont know if your's did that?
F4R'd ITB'd '92 cup racer
Re: Mk1 172 Hybrid Track Car Project
no idea what the cause was, although it happened after i had man handled the wiring to get it into the relay/fuse box. we tried to get it to do it again, but it just started up without fail every time
didnt do the twice priming thing
but once its been started for the first time, it will start every time without fail
no idea what the cause was, although it happened after i had man handled the wiring to get it into the relay/fuse box. we tried to get it to do it again, but it just started up without fail every time
didnt do the twice priming thing
but once its been started for the first time, it will start every time without fail
Re: Mk1 172 Hybrid Track Car Project
mine first happened a week or so ago.....went out morning after and it fired up....was fine for a week until yesterday when it happened again....got it going after a few hours, then it happened again.....
got it towed home, pushed it onto drive, turned key and it started! then went out this morning and it wont start again!
Its either gotta be intermittent CPS/TDC fault, wiring or a relay imo!
Matteh says you should get a reading on the rev counter when cranking, needle flicking slightly, which indicates the CPS/TDC is working correctly.....mine dosent so I have a feeling its faulty....
mine first happened a week or so ago.....went out morning after and it fired up....was fine for a week until yesterday when it happened again....got it going after a few hours, then it happened again.....
got it towed home, pushed it onto drive, turned key and it started! then went out this morning and it wont start again!
Its either gotta be intermittent CPS/TDC fault, wiring or a relay imo!
Matteh says you should get a reading on the rev counter when cranking, needle flicking slightly, which indicates the CPS/TDC is working correctly.....mine dosent so I have a feeling its faulty....
F4R'd ITB'd '92 cup racer
Re: Mk1 172 Hybrid Track Car Project
balls :dapprove:
why didnt i get anything at the tacho when i went to pin 70? not even a little movement from the needle! :dapprove:
just when i had tidied all the wiring up aswell
10k pullup wont work on the coil signal wires, its to 'boost' the ecu output to replicate a coil signal and thus be compatible with the mk1 clocks
trust me, pin 70 ftw, coil signal wire ftl
balls :dapprove:
why didnt i get anything at the tacho when i went to pin 70? not even a little movement from the needle! :dapprove:
just when i had tidied all the wiring up aswell
'92 172, Lotus Elise
Re: Mk1 172 Hybrid Track Car Project
yeh, most odd :S
i *know* that car had a standalone ecu in it before with the 10k pullup and the rev counter worked fine
I had heard that the mod was done on the clocks, but maybe it was done on the loom!
without the pullup the needle wont budge at all
yeh, most odd :S
i *know* that car had a standalone ecu in it before with the 10k pullup and the rev counter worked fine
I had heard that the mod was done on the clocks, but maybe it was done on the loom!
without the pullup the needle wont budge at all
F4R'd ITB'd '92 cup racer
Re: Mk1 172 Hybrid Track Car Project
that would be why it wont move at all then
ah well at least the wires are close to each other (im currently tapped into coil signal wire at ecu end, so no trouble to swap it to pin 70)
and after you mentioned it i looked for the resistor, but it all looks standard behind the clocks, well, it did :evil:
yeh, most odd :S
i *know* that car had a standalone ecu in it before with the 10k pullup and the rev counter worked fine
I had heard that the mod was done on the clocks, but maybe it was done on the loom!
without the pullup the needle wont budge at all
that would be why it wont move at all then
ah well at least the wires are close to each other (im currently tapped into coil signal wire at ecu end, so no trouble to swap it to pin 70)
and after you mentioned it i looked for the resistor, but it all looks standard behind the clocks, well, it did :evil:
TVR Cerbera
Re: Mk1 172 Hybrid Track Car Project
Foxy, try the fuel relay, cos on 1*2's water gets in the relay box on the passenger inner wing, corrodes the contacts. Also the relay is known to fail and cause no start, but prime iirc
Foxy, try the fuel relay, cos on 1*2's water gets in the relay box on the passenger inner wing, corrodes the contacts. Also the relay is known to fail and cause no start, but prime iirc
Re: Mk1 172 Hybrid Track Car Project
Tried some other relays earlier with no joy, just the same....
Anyway this is what I have now tried:
Swapped crank sensor, which did not fix it.
Removed all conduit from ECU wiring, checked all the joints one by one, all fine.
Checked the ECU plug, seems all fine.
Tried the different relays as said, no change.
Then the starter motor stopped working, could just hear the solenoid firing, but not turning. So turned the engine over by hand, was fine and seemed to 'free' the motor, still wouldnt start.
Removed starter motor, tested it seperately. Works fine. Then connected it to the cars wiring in the engine bay but loose, works fine.
Fitted back to the car, attempted to start again, turns over as normal now, still no start though.
Sat around scratching head for 10 mins, went to start....and it fired up! Left it idling for 5 mins, then turned off. Went to start it again straight away, started up again!
After another few mins, turned it off.....left it a few mins, went to start it...nothing again
RSTuner was also playing up, not connecting and stuff at times. When I did manage to get it connected, it had a fault in the memory of 'Ignition Constant Feed' or something....checked all the ECU power wires, all seem fine.
Only thing left for me to try is remove all my extended wires, and replace them all with fresh runs of cable, not cable cut from old looms....hopefully that might sort it
Tried some other relays earlier with no joy, just the same....
Anyway this is what I have now tried:
Swapped crank sensor, which did not fix it.
Removed all conduit from ECU wiring, checked all the joints one by one, all fine.
Checked the ECU plug, seems all fine.
Tried the different relays as said, no change.
Then the starter motor stopped working, could just hear the solenoid firing, but not turning. So turned the engine over by hand, was fine and seemed to 'free' the motor, still wouldnt start.
Removed starter motor, tested it seperately. Works fine. Then connected it to the cars wiring in the engine bay but loose, works fine.
Fitted back to the car, attempted to start again, turns over as normal now, still no start though.
Sat around scratching head for 10 mins, went to start....and it fired up! Left it idling for 5 mins, then turned off. Went to start it again straight away, started up again!
After another few mins, turned it off.....left it a few mins, went to start it...nothing again
RSTuner was also playing up, not connecting and stuff at times. When I did manage to get it connected, it had a fault in the memory of 'Ignition Constant Feed' or something....checked all the ECU power wires, all seem fine.
Only thing left for me to try is remove all my extended wires, and replace them all with fresh runs of cable, not cable cut from old looms....hopefully that might sort it
